National Stock Number
4240-99-623-7383
National Stock Number (NSN) 4240-99-623-7383, or NIIN 996237383, (valve,breathing apparatus) has an unknown assigned date. NIIN 996237383 was cancelled on December 2, 2003, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4220013306017. This NSN does not replace any other NSNs.
There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 39364. [A ITEM SPECIFICALLY DESIGNED TO AUTOMATICALLY/MANUALLY MAINTAIN OUTLET PRESSURE IN A DIVERS HELMET/BREATHING APPARATUS. IT IS DESIGNED FOR USE WITH BREATHING GASSES.].
This information was last updated on Aug 15, 2025.